now install the '''xcscope''' emacs package with [[ELPA]]. When done, you can either enable the mode with '''cscope-minor-mode''' (which will add a menu you are free to explore) or call some functions like {{Command|cscope-find-global-definition}}, {{Command|cscope-find-functions-calling-this-function}}, etc.

+

now install the '''xcscope''' emacs package with [[ELPA]] and require it:

+

(require 'xcscope)

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+

When done, you can either enable the mode with '''cscope-minor-mode''' (which will add a menu you are free to explore) or call some functions like {{Command|cscope-find-global-definition}}, {{Command|cscope-find-functions-calling-this-function}}, etc.

Auto-Completion

rope & ropemacs

Jedi

Jedi.el is a Python auto-completion package for Emacs. It aims at helping your Python coding in a non-destructive way. It also helps you to find information about Python objects, such as docstring, function arguments and code location.

Code Checker

Flymake

flymake is a on-the-fly syntax checker for Emacs.
We can use it alongside with flyspell.

To run pep8, pylint, pyflakes and unit-tests (with nose), you can be interested in using flymake-python.

Don't forget about pylint too.

Indexing sources: ctags, cscope, pycscope

etags, ctags

Etags (Exuberant Ctags) generates an index (or tag) file of language objects found in source files that allows these items to be quickly and easily located by a text editor or other utility. A tag signifies a language object for which an index entry is available (or, alternatively, the index entry created for that object). Etags is a multilingual implementation of ctags.

The primary use for the tags files is looking up class/method/function/constant/etc declaration/definitions. Cscope is more powerful (see below).

usage

Generate the tags with this command at the root of your project:

find . -name "*.py" -print | etags -

it creates the file TAGS.

Note that projects like Projectile or Helm provide an integrated use of etags (finding one, re-generating the index, etc).

cscope

cscope is a much more powerful beast. While it operates on more or less the same principle (generating a file of useful metadata) it allows you do some fancier things like find all references to a symbol, see where a function is being invoked, etc (you can find definitions as well).

It is originally designed for C and C++, but thanks to version 0.3 of pycscope, pythonista can make use of it.

When done, you can either enable the mode with cscope-minor-mode (which will add a menu you are free to explore) or call some functions like M-x cscope-find-global-definition, M-x cscope-find-functions-calling-this-function, etc.

Debugging

Ipdb, ipython debugger

If you call ipdb, the execution will stop and give a nice ipython-looking prompt.
Just add `import ipdb; ipdb.set_trace()`